All Evolution Trivia Questions

25 Questions | By Biology16100 | Updated: Mar 21, 2022 | Attempts: 1134

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Questions and Answers

1.

Two species of wild lettuce grow in the same areas, but one flowers in early spring and the other flowers in summer. This is an example of a:
- A.
  
  Temporal isolating mechanism
- B.
  
  Geographical isolating mechanism
- C.
  
  Behavioral isolating mechanism
- D.
  
  Mechanical isolating mechanism
- E.
  
  Postzygotic isolating mechanism
2.

The sperm of species A dies when it comes in contact with the female reproductive tract of species B. This is an example of:
- A.
  
  A prezygotic isolating mechanism
- B.
  
  A postzygotic isolating mechanism
- C.
  
  Gradualism
- D.
  
  Polyploidy
- E.
  
  Sexual selection
3.

Which of these isolating mechanisms occurs at the pre-mating stage?
- A.
  
  Geographic isolation
- B.
  
  Gametic incompatibility
- C.
  
  Hybrid disadvantage
- D.
  
  Hybrid sterility
4.

Which of the following statements is NOT true about natural selection?
- A.
  
  Natural selection directs the course of evolution by preserving traits acquired during an individual’s lifetime
- B.
  
  The offspring of individuals that are better adapted to the environment will make up a larger proportion of the next generation
- C.
  
  Natural selection depends on the genetic variability in a population, which in turn arises through mutations
- D.
  
  Natural selection acts to preserve favourable traits and eliminate unfavourable traits
- E.
  
  Natural selection leads to adaptive evolutionary change
5.

Random evolutionary changes in a small breeding population is known as:
- A.
  
  Gene flow
- B.
  
  Genetic drift
- C.
  
  Disruptive selection
- D.
  
  Natural selection
- E.
  
  Mutation
6.

Seriously abnormal phenotypes or harmful mutations are acted against or reduced to low frequencies by:
- A.
  
  Beneficial mutations
- B.
  
  Gene flow
- C.
  
  Disruptive selection
- D.
  
  Genetic drift
- E.
  
  Natural selection
7.

The migration of breeding individuals between populations causes a corresponding movement of alleles, which is referred to as:
- A.
  
  Genetic drift
- B.
  
  Directional selection
- C.
  
  Natural selection
- D.
  
  Gene flow
- E.
  
  Mutation
8.

Because of fluctuations in the environment a population may periodically experience a rapid decrease in the number of individuals. When this occurs, genetic drift can occur in the few remaining survivors, a process referred to as:
- A.
  
  The founder effect
- B.
  
  Migration
- C.
  
  A genetic bottleneck
- D.
  
  Gene flow
- E.
  
  Natural selection
9.

The process that decreases the number of organisms with phenotypes less fit to meet environmental challenges is:
- A.
  
  Natural selection
- B.
  
  Genetic drift
- C.
  
  Gene flow
- D.
  
  Genetic polymorphism
- E.
  
  Migration
10.

When phenotypes are favoured at one extreme of a normal distribution, selection occurs:
- A.
  
  Stabilizing
- B.
  
  Directional
- C.
  
  Disruptive
- D.
  
  Frequency dependent
- E.
  
  Abnormal
11.

Frequency dependent selection acts to decrease the frequency of which phenotype in a population?
- A.
  
  The least common phenotypes
- B.
  
  The average phenotype
- C.
  
  The most conspicuous phenotypes
- D.
  
  The most common phenotype
- E.
  
  The most camouflaged phenotype
12.

In selection, individuals with a phenotype near the mean are favoured over those with phenotypic extremes
- A.
  
  Directional
- B.
  
  Disruptive
- C.
  
  Stabilizing
- D.
  
  Frequency-dependent
- E.
  
  Natural
13.

Human birth weight is a good example of:
- A.
  
  Genetic drift
- B.
  
  The founder effect
- C.
  
  Directional selection
- D.
  
  Disruptive selection
- E.
  
  Stabilizing selection
14.

The prevention of genetic exchange between two species because they reproduce at different times of the day, season or year is called:
- A.
  
  Hybrid sterility
- B.
  
  Genetic isolation
- C.
  
  Sexual isolation
- D.
  
  Mechanical isolation
- E.
  
  Temporal isolation
15.

The distinctive mating signals that have evolved as part of animals courtship illustrates what type of reproductive isolating mechanism?
- A.
  
  Behavioral isolation
- B.
  
  Mechanical isolation
- C.
  
  Gametic isolation
- D.
  
  Temporal isolation
- E.
  
  Hybrid breakdown
16.

When the reproductive cells of different species are incompatible, it is referred to as:
- A.
  
  Behavioral isolation
- B.
  
  Gametic isolation
- C.
  
  Hybrid isolation
- D.
  
  Temporal isolation
- E.
  
  Hybrid sterility
17.

The geographic isolation of Kaibab squirrels from Albert squirrels appears to be leading to:
- A.
  
  Sympatric speciation
- B.
  
  Hybridization
- C.
  
  Allopolypoidy
- D.
  
  Allopatric speciation
- E.
  
  Adaptive radiation
18.

If two species are able to interbreed but produced sterile hybrids, their species integrity is maintained by:
- A.
  
  Gametic isolation
- B.
  
  A prezygotic barrier
- C.
  
  Hybrid inviability
- D.
  
  A postzygotic barrier
19.

Cattle breeders have improved the quality of meat over the years by which process?
- A.
  
  Artificial selection
- B.
  
  Directional selection
- C.
  
  Stabilizing selection
- D.
  
  Artificial and directional selection only
- E.
  
  Artificial, directional and stabilizing selection
20.

Which of the following is NOT considered a reproductive isolating mechanism?
- A.
  
  Sterile offspring
- B.
  
  Ecological isolation
- C.
  
  Feeding behaviour
- D.
  
  Gametic incompatibility
- E.
  
  Timing of courtship display
21.

Which of the following reproductive isolating mechanisms is postzygotic?
- A.
  
  Habitat isolation
- B.
  
  Temporal isolation
- C.
  
  Hybrid sterility
- D.
  
  Behavioural isolation
- E.
  
  Gamete incompatibility
22.

Although different species of warblers often migrate together and use the same habitats for mating and feeding, they rarely hybridize. The isolating mechanism, most likely to be operating is:
- A.
  
  Ecological isolation
- B.
  
  Temporal isolation
- C.
  
  Behavioural isolation
- D.
  
  Mechanical isolation
- E.
  
  Gametic isolation
23.

Some species of Anopheles mosquito live in brackish water, some in running freshwater, and others in stagnant water. What type of reproductive barrier is most obviously separating these different species?
- A.
  
  Ecological isolation
- B.
  
  Temporal isolation
- C.
  
  Behavioural isolation
- D.
  
  Gametic isolation
- E.
  
  Postzygotic isolation
24.

The reproductive barrier that maintains the species boundary between horses and donkeys is:
- A.
  
  Mechanical isolation
- B.
  
  Gametic isolation
- C.
  
  Hybrid in-viability
- D.
  
  Hybrid sterility
- E.
  
  Hybrid breakdown
25.

Review the image and answer the following question.The tendency for human infants to weigh 7 lbs at birth is an example of what kind of selection?
- A.
  
  Disruptive selection
- B.
  
  Stabilizing selection
- C.
  
  Directional selection
- D.
  
  None of these is correct.